Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992xrea.conf..175t&link_type=abstract
In MPI für Extraterrestrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background p 175-180 (SEE
Astronomy and Astrophysics
Astronomy
Astronomical Photometry, Iue, Quasars, Rosat Mission, Sky Surveys (Astronomy), Ultraviolet Radiation, X Ray Spectra, Active Galactic Nuclei, Correlation, Light Curve, Variability, X Ray Astronomy
Scientific paper
Results of X-ray observations, ultraviolet observations with the IUE camera, and optical photometry observations carried out with a 70 cm telescope, of Kaz 102, a close by radio quiet quasar, are presented. Optical and UV observations indicated that during the X-ray monitoring the source exhibited variability of 10 percent. Comments on the X-ray variability were not made due to systematic errors. It was hoped to be able to correlate the UV and optical photometry when all the optical data of the collaboration would be analyzed, the perspective of a cross correlation with X-rays are not good, because optical data indicated a modest variability. If the X-ray variability is similar, it is doubted that systematic errors could be reduced in such a way that the variability can show up. The X-ray spectrum indicates some soft excess, which is not unexpected in the PSPC (Position Sensitive Proportional Counter) energy range. Results are compared with the Einstein 1979 data.
Brinkmann Wolfgang
de Martino Domitilla
Elvis Martin
Fink Henner
Heidt Jochen
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